Information leak-preventing apparatus and information leak-preventing method

Abstract

A password creating unit acquires medium information such as a serial number from an HDD, and creates a password according to an algorithm previously stored in an algorithm storing unit. A lock processing unit performs the process of lock and unlock of the HDD by using the created password.

1 . An information leak-preventing apparatus that prevents leakage of information from a storage medium, the information leak-preventing apparatus comprising:
 an storing unit that stores therein an algorithm;   a reading unit that reads medium information related to the storage medium from the storage medium;   a creating unit that creates a password by using the medium information and the algorithm; and   a controlling unit that controls reading of information from the storage medium based on created password.   
     
     
         2 . The information leak-preventing apparatus according to  claim 1 , further comprising an input unit configured to receive input of a user password, wherein
 the controlling unit prevents reading of information from the storage medium or cancels prevention of reading of information from the storage medium when the user password matches with the created password.   
     
     
         3 . The information leak-preventing apparatus according to  claim 1 , wherein the medium information includes at least one of an identification number unique to the storage medium, a model number of the storage medium, storage capacity of the storage medium, and manufacturing information about the storage medium. 
     
     
         4 . The information leak-preventing apparatus according to  claim 1 , wherein the algorithm stored in the storing unit is rewritable. 
     
     
         5 . The information leak-preventing apparatus according to  claim 1 , wherein
 the reading unit reads a plurality of pieces of the medium information from the storage medium, and   the creating unit randomly selects a part of the medium information read by the reading unit that is to be used for creating the password.   
     
     
         6 . The information leak-preventing apparatus according to  claim 1 , wherein a one-way function is used for the algorithm. 
     
     
         7 . A method for preventing leakage of information from a storage medium, the method comprising:
 reading medium information related to the storage medium from the storage medium;   creating a password by using an algorithm and the medium information; and   controlling reading of information from the storage medium based on created password.   
     
     
         8 . The method according to  claim 7 , further comprising receiving input of a user password, wherein
 controlling includes preventing reading of information from the storage medium or canceling prevention of reading of information from the storage medium when the user password matches with the created password.   
     
     
         9 . The method according to  claim 7 , wherein the medium information includes at least one of an identification number unique to the storage medium, a model number of the storage medium, storage capacity of the storage medium, and manufacturing information about the storage medium. 
     
     
         10 . The method according to  claim 7 , wherein the algorithm is rewritable. 
     
     
         11 . The method according to  claim 7 , wherein
 the reading includes reading a plurality of pieces of the medium information from the storage medium, and   the creating includes randomly selecting a part of the medium information read at the reading that is to be used for creating the password.   
     
     
         12 . The method according to  claim 7 , wherein the creating includes creating the algorithm based on a one-way function.